MIL-J-641E, MILITARY SPECIFICATION: JACKS, TELEPHONE, GENERAL SPECIFICATION FOR (26 FEB 1979)

MIL-J-641E, MILITARY SPECIFICATION: JACKS, TELEPHONE, GENERAL SPECIFICATION FOR (26 FEB 1979)., This specification covers jacks used in telephone (including switchboard consoles), telegraph, and teletype circuits, and for connecting headsets, handsets, and microphones into communications circuits.